I have ZOOM MRS-1608 & 1044, in both of them I can find no way of changing the octave of the bass root note. After choosing the rhythm pattern & number of bars the 1808 manual states:

"9. Repeat steps 4 – 8 to enter all required pattern information."

no mention of octaves.

In Rhythm Song mode, I created a simple 12 bar blues in E (E,E,E,E,A,A,E,E,B,A,E,B) when I enter the B instead of the bass sounding B above E it sounds B below E then goes up to A above E.

OrgRoot is set to E yet I am stuck in an octave of B C D E F G A, paradoxically the bass pad bank is in E. In Rhythm Song mode how do you to get the octave to start at E or access the other 2 octaves, like in the bass pads section?